Chapter 4 - Cubes and Cube Roots - R S Aggarwal Solutions for class 8
Cube of a number: for a given number x, we define cube of x = x×x×x and is denoted byx3.
Perfect cube: A natural number is said to be a perfect cube if it is the cube of some natural number.
Note: A given number is a perfect cube if it can be expressed as the product of triplets of equal factors.
Cube of a rational number:
Properties of cubes of numbers
(a) The cube of every even number is even.
(b) The cube of every odd number is odd.